/* @license
 * jQuery.print, version 1.5.1
 *  (c) Sathvik Ponangi, Doers' Guild
 * Licence: CC-By (http://creativecommons.org/licenses/by/3.0/)
 *--------------------------------------------------------------------------*/
;(function ($) {
  'use strict'
  // A nice closure for our definitions
  function getjQueryObject(string) {
    // Make string a vaild jQuery thing
    var jqObj = $('')
    try {
      jqObj = $(string).clone()
    } catch (e) {
      jqObj = $('<span />').html(string)
    }
    return jqObj
  }

  function printFrame(frameWindow, content, options) {
    // Print the selected window/iframe
    var def = $.Deferred()
    try {
      frameWindow = frameWindow.contentWindow || frameWindow.contentDocument || frameWindow
      var wdoc = frameWindow.document || frameWindow.contentDocument || frameWindow
      if (options.doctype) {
        wdoc.write(options.doctype)
      }
      wdoc.write(content)
      wdoc.close()
      var printed = false
      var callPrint = function () {
        if (printed) {
          return
        }
        // Fix for IE : Allow it to render the iframe
        frameWindow.focus()
        try {
          // Fix for IE11 - printng the whole page instead of the iframe content
          if (!frameWindow.document.execCommand('print', false, null)) {
            // document.execCommand returns false if it failed -http://stackoverflow.com/a/21336448/937891
            frameWindow.print()
          }
          // focus body as it is losing focus in iPad and content not getting printed
          $('body').focus()
        } catch (e) {
          frameWindow.print()
        }
        frameWindow.close()
        printed = true
        def.resolve()
      }
      // Print once the frame window loads - seems to work for the new-window option but unreliable for the iframe
      $(frameWindow).on('load', callPrint)
      // Fallback to printing directly if the frame doesn't fire the load event for whatever reason
      setTimeout(callPrint, options.timeout)
    } catch (err) {
      def.reject(err)
    }
    return def
  }

  function printContentInIFrame(content, options) {
    var $iframe = $(options.iframe + '')
    var iframeCount = $iframe.length
    if (iframeCount === 0) {
      // Create a new iFrame if none is given
      $iframe = $('<iframe height="0" width="0" border="0" wmode="Opaque"/>').prependTo('body').css({
        'position': 'absolute',
        'top': -999,
        'left': -999
      })
    }
    var frameWindow = $iframe.get(0)
    return printFrame(frameWindow, content, options)
      .done(function () {
        // Success
        setTimeout(function () {
          // Wait for IE
          if (iframeCount === 0) {
            // Destroy the iframe if created here
            $iframe.remove()
          }
        }, 1000)
      })
      .fail(function (err) {
        // Use the pop-up method if iframe fails for some reason
        console.error('Failed to print from iframe', err)
        printContentInNewWindow(content, options)
      })
      .always(function () {
        try {
          options.deferred.resolve()
        } catch (err) {
          console.warn('Error notifying deferred', err)
        }
      })
  }

  function printContentInNewWindow(content, options) {
    // Open a new window and print selected content
    var frameWindow = window.open()
    return printFrame(frameWindow, content, options).always(function () {
      try {
        options.deferred.resolve()
      } catch (err) {
        console.warn('Error notifying deferred', err)
      }
    })
  }

  function isNode(o) {
    /* http://stackoverflow.com/a/384380/937891 */
    return !!(typeof Node === 'object'
      ? o instanceof Node
      : o && typeof o === 'object' && typeof o.nodeType === 'number' && typeof o.nodeName === 'string')
  }
  $.print = $.fn.print = function () {
    // Print a given set of elements
    var options,
      $this,
      self = this
    // console.log("Printing", this, arguments);
    if (self instanceof $) {
      // Get the node if it is a jQuery object
      self = self.get(0)
    }
    if (isNode(self)) {
      // If `this` is a HTML element, i.e. for
      // $(selector).print()
      $this = $(self)
      if (arguments.length > 0) {
        options = arguments[0]
      }
    } else {
      if (arguments.length > 0) {
        // $.print(selector,options)
        $this = $(arguments[0])
        if (isNode($this[0])) {
          if (arguments.length > 1) {
            options = arguments[1]
          }
        } else {
          // $.print(options)
          options = arguments[0]
          $this = $('html')
        }
      } else {
        // $.print()
        $this = $('html')
      }
    }
    // Default options
    var defaults = {
      globalStyles: true,
      mediaPrint: false,
      stylesheet: null,
      noPrintSelector: '.no-print',
      iframe: true,
      append: null,
      prepend: null,
      manuallyCopyFormValues: true,
      deferred: $.Deferred(),
      timeout: 750,
      title: null,
      doctype: '<!doctype html>'
    }
    // Merge with user-options
    options = $.extend({}, defaults, options || {})
    var $styles = $('')
    if (options.globalStyles) {
      // Apply the stlyes from the current sheet to the printed page
      $styles = $('style, link, meta, base, title')
    } else if (options.mediaPrint) {
      // Apply the media-print stylesheet
      $styles = $('link[media=print]')
    }
    if (options.stylesheet) {
      // Add a custom stylesheet if given
      $styles = $.merge($styles, $('<link rel="stylesheet" href="' + options.stylesheet + '">'))
    }
    // Create a copy of the element to print
    var copy = $this.clone()
    // Wrap it in a span to get the HTML markup string
    copy = $('<span/>').append(copy)
    // Remove unwanted elements
    copy.find(options.noPrintSelector).remove()
    // Add in the styles
    copy.append($styles.clone())
    // Update title
    if (options.title) {
      var title = $('title', copy)
      if (title.length === 0) {
        title = $('<title />')
        copy.append(title)
      }
      title.text(options.title)
    }
    // Appedned content
    copy.append(getjQueryObject(options.append))
    // Prepended content
    copy.prepend(getjQueryObject(options.prepend))
    if (options.manuallyCopyFormValues) {
      // Manually copy form values into the HTML for printing user-modified input fields
      // http://stackoverflow.com/a/26707753
      copy.find('input').each(function () {
        var $field = $(this)
        if ($field.is("[type='radio']") || $field.is("[type='checkbox']")) {
          if ($field.prop('checked')) {
            $field.attr('checked', 'checked')
          }
        } else {
          $field.attr('value', $field.val())
        }
      })
      copy.find('select').each(function () {
        var $field = $(this)
        $field.find(':selected').attr('selected', 'selected')
      })
      copy.find('textarea').each(function () {
        // Fix for https://github.com/DoersGuild/jQuery.print/issues/18#issuecomment-96451589
        var $field = $(this)
        $field.text($field.val())
      })
    }
    // Get the HTML markup string
    var content = copy.html()
    // Notify with generated markup & cloned elements - useful for logging, etc
    try {
      options.deferred.notify('generated_markup', content, copy)
    } catch (err) {
      console.warn('Error notifying deferred', err)
    }
    // Destroy the copy
    copy.remove()
    if (options.iframe) {
      // Use an iframe for printing
      try {
        printContentInIFrame(content, options)
      } catch (e) {
        // Use the pop-up method if iframe fails for some reason
        console.error('Failed to print from iframe', e.stack, e.message)
        printContentInNewWindow(content, options)
      }
    } else {
      // Use a new window for printing
      printContentInNewWindow(content, options)
    }
    return this
  }
})(jQuery)
